Need more vaccuum for PB - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**1970 CST Short Wide** · 09-01-2006, 09:40 AM

I saw some place were you can add another canister to help out your power brake booster when you have a big cam. How do you hook some thing like this up?

LONGHAIR · 09-01-2006, 10:52 AM

It is a simple cannister that you mount under the hood pretty much anywhere it will fit. It gets a vacuum line running to a fitting on the intake manifold. It ads volume to the vacuum system much like a larger tank on your air compressor. It makes the air last longer before it has to be replaced, keeping everything more stable.....less fluctuation.
It will not increase the vacuum itself. As in, you will not get more vacuum....it just makes what you have last longer.

**1970 CST Short Wide** · 09-01-2006, 12:29 PM

So I just hook 1 line into a can from the intake manifold, No line out? Forgive my stupidity I'm just trying to understand. I get the more volume part I think.
It’s just storing vacuum in the can until its needed right ???

BarryB · 09-01-2006, 02:01 PM

Hey jumping in here, but to answer your question about the lines. You'll have one coming from your vacuum source( intake), and another one coming out of the canister and going to to brake booster.
Hope that helps.

**1970 CST Short Wide** · 09-01-2006, 03:40 PM

Do I splice into the brake booster line with a tee? Anybody done this and have pic's or a drawing. Will this help my power brakes due to big cam

sneakysnake · 09-01-2006, 03:41 PM

Just put a "T" in the line from your manifold to the booster, and run it to the canister.

jacobs · 09-01-2006, 05:06 PM

Be sure to install a check valve inline between the new vacuum canister and the intake manifold, otherwise it you won't gain anything.

09-01-2006, 09:40 AM	#1
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,185	Need more vaccuum for PB I saw some place were you can add another canister to help out your power brake booster when you have a big cam. How do you hook some thing like this up? __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

09-01-2006, 10:52 AM	#2
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	Re: Need more vaccuum for PB It is a simple cannister that you mount under the hood pretty much anywhere it will fit. It gets a vacuum line running to a fitting on the intake manifold. It ads volume to the vacuum system much like a larger tank on your air compressor. It makes the air last longer before it has to be replaced, keeping everything more stable.....less fluctuation. It will not increase the vacuum itself. As in, you will not get more vacuum....it just makes what you have last longer. Last edited by LONGHAIR; 09-01-2006 at 10:55 AM.

09-01-2006, 12:29 PM	#3
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,185	Re: Need more vaccuum for PB So I just hook 1 line into a can from the intake manifold, No line out? Forgive my stupidity I'm just trying to understand. I get the more volume part I think. It’s just storing vacuum in the can until its needed right ??? __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

09-01-2006, 02:01 PM	#4
BarryB Senior Member Join Date: Jul 2006 Location: Blountville, Tn. Posts: 3,904	Re: Need more vaccuum for PB Hey jumping in here, but to answer your question about the lines. You'll have one coming from your vacuum source( intake), and another one coming out of the canister and going to to brake booster. Hope that helps.

09-01-2006, 03:40 PM	#5
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,185	Re: Need more vaccuum for PB Do I splice into the brake booster line with a tee? Anybody done this and have pic's or a drawing. Will this help my power brakes due to big cam __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

09-01-2006, 03:41 PM	#6
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: Need more vaccuum for PB Just put a "T" in the line from your manifold to the booster, and run it to the canister.

09-01-2006, 05:06 PM	#7
jacobs Registered User Join Date: Sep 2005 Location: 9000' Mountain Man Posts: 326	Re: Need more vaccuum for PB Be sure to install a check valve inline between the new vacuum canister and the intake manifold, otherwise it you won't gain anything.



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